And it's easy to turn back on again by editing one little .plist file...
Any type of censorship for any reason is wrong. Plus, "moral" is very subjective.
Apple would come under MASSIVE fire if they used that to stop jailbreaking, espeically since it's now bee ruled as legal. And not just from customers, either; but from trade regulators.
LOL. If I was having my phone tapped and censored, know what I'd do? I'd hack that s**t off of it, and even if I couldn't, I'd use another phone and keep it secret from my parents.
Trying to make your kids good by censoring what they see and say will never work. Not ever. In fact, if anything, it'll make them even more rebellious.
The type of parents doing this would most likely be looking through their kids' messages, too - how's that safeguarding privacy?
Not only that, but parents shouldn't be doing this in the first place. It's your job to educate your children, not monitor them like a crazed paranoid schizophrenic.